responsibility

[richf]

Where does it say in the NEC as far as the utility's responsibility of service ends? I always thought it is at the connection at the weatherhead.

 

[ryan_618]

90.2(b)(5).

 

[richf]

So what dictates the type/size of wire from the top of the meter base to the weatherhead connection to the utility?

 

[dnem]

So what dictates the type/size of wire from the top of the meter base to the weatherhead connection to the utility?

90.2(B)
(1)ships
(2)mines
(3)railways
(4)&(5)utility controled

Any service that doesn't fall under 90.2(B) falls under 230.90(A) which has phase conductors sized by Table310.16 and the grounded neutral of 250.24(C)(1) sized by Table250.66.

230.90(A)x2 says that the numbers of Table310.16 can be adjusted by 240.4(B) & 240.6(A).

230.90(A)x5 refers residential to Table310.15(B)(6).

The electric utilities in my area stop their control at one of 3 places: transformer, weatherhead tails, or meter.
For underground laterals they stop at the last transformer.
For overhead laterals run to a building mounted meterbase, they stop at the weatherhead tails.
For overhead laterals run to a pole mounted meterbase, they stop at the meter.

Call your utility. They can tell you where they stop on any particular application.

David

 

[bphgravity]

Generally, everything after the service point as defined by Article 100 is the responsibility of the electrical contractor. However, there are still issues ahead of the service point contractors need to be concerned about such as clearances around service drops.

 

[dlhoule]

Elec. Systems Tech.

An electrical alarm system is a system. So are many other things. What is an Elec. Systems Tech.?

There are control systems on automated pieces of equipment.

There are many types of systems.